確率論を利用した複数配管の保全・設計最適化手法の開発
Development of Maintenance and Design Optimization Method forPiping System Based on Stochastic Theory
著者:
高瀬 健太郎 Kentaro TAKASE 江浪 久 Hisashi ENAMI 角皆 学 Manabu TSUNOKAI
発刊日:
公開日:
Bayesian statisticsLRFDoptimization of maintenance and designpiping systemSCC
概要
The conventional design of structural components such as piping or vessels is made based on the deterministic method. In the design method, the margin of the design integrity is expressed as empirical safety factor. On t he other hand, the stochastic safety factor is calculated from data such as the standard deviation of the mate rial strength in the LRFD (Load and Resistance Factor Design) method. This method allows a rational design bas ed on the up-to-date knowledge. In this study the optimization method of maintenance and design has been devel oped for piping system based on the LRFD method. The effect of SCC to the strength of the piping is taken into account. The periodic inspection of SCC is simulated using the probabilistic model. The database of the inspe ction results as field data is used to estimate the timing of SCC generation through the Bayesian statistics.
